TY - CONF AU - D Meekhof AU - Steven Jefferts AU - D Lee AU - Craig Nelson C2 - CPEM ''98 , Washington, DC, USA DA - 1998-01-01 00:01:00 LA - en PB - CPEM ''98 , Washington, DC, USA PY - 1998 TI - Preliminary Results from the NIST Cs Fountain Frequency Standard ER -